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1.
Int J Mol Sci ; 25(4)2024 Feb 11.
Artigo em Inglês | MEDLINE | ID: mdl-38396855

RESUMO

Bladder cancer (BC) is one of the most common types of cancer worldwide, with significant differences in survival depending on the degree of muscle and surrounding tissue invasion. For this reason, the timely detection and monitoring of the disease are important. Surveillance cystoscopy is an invasive, costly, and uncomfortable procedure to monitor BC, raising the need for new, less invasive alternatives. In this scenario, microRNAs (miRNAs) represent attractive prognostic tools given their role as gene regulators in different biological processes, tissue expression, and their ease of evaluation in liquid samples. In cancer, miRNA expression is dynamically modified depending on the tumor type and cancer staging, making them potential biomarkers. This review describes the most recent studies in the last five years exploring the utility of miRNA-based strategies to monitor progression, stratify, and predict relevant clinical outcomes of bladder cancer. Several studies have shown that multimarker miRNA models can better predict overall survival, recurrence, and progression in BC patients than traditional strategies, especially when combining miRNA expression with clinicopathological variables. Future studies should focus on validating their use in different cohorts and liquid samples.


Assuntos
MicroRNAs , Neoplasias da Bexiga Urinária , Humanos , MicroRNAs/genética , MicroRNAs/metabolismo , Perfilação da Expressão Gênica/métodos , Biomarcadores Tumorais/genética , Biomarcadores Tumorais/metabolismo , Regulação Neoplásica da Expressão Gênica , Neoplasias da Bexiga Urinária/diagnóstico , Neoplasias da Bexiga Urinária/genética , Neoplasias da Bexiga Urinária/patologia
2.
Glob Ment Health (Camb) ; 10: e29, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37808271

RESUMO

Psychiatric deinstitutionalization (PDI) processes aim to transform long-term psychiatric care by closing or reducing psychiatric hospitals, reallocating beds, and establishing comprehensive community-based services for individuals with severe and persistent mental health difficulties. This scoping review explores the extensive literature on PDI, spanning decades, regions, socio-political contexts, and disciplines, to identify barriers and facilitators of PDI implementation, providing researchers and policymakers with a categorization of these factors. To identify barriers and facilitators, three electronic databases (Medline, CINAHL, and Sociological Abstracts) were searched, yielding 2,250 references. After screening and reviewing, 52 studies were included in the final analysis. Thematic synthesis was utilized to categorize the identified factors, responding to the review question. The analysis revealed that barriers to PDI include inadequate planning, funding, and leadership, limited knowledge, competing interests, insufficient community-based alternatives, and resistance from the workforce, community, and family/caregivers. In contrast, facilitators encompass careful planning, financing and coordination, available research and evidence, strong and sustained advocacy, comprehensive community services, and a well-trained workforce engaged in the process. Exogenous factors, such as conflict and humanitarian disasters, can also play a role in PDI processes. Implementing PDI requires a multifaceted strategy, strong leadership, diverse stakeholder participation, and long-term political and financial support. Understanding local needs and forces is crucial, and studying PDI necessitates methodological flexibility and sensitivity to contextual variation. At the same time, based on the development of the review itself, we identify four limitations in the literature, concerning "time," "location," "focus," and "voice." We call for a renewed research and advocacy agenda around this neglected aspect of contemporary global mental health policy is needed.

3.
Future Oncol ; 19(1): 77-93, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36705257

RESUMO

To date, prostate cancer remains the most common tumor diagnosed in males and the second most common cause of cancer-related mortality. While current screening protocols can detect early disease, they lack enough sensitivity and specificity, leading to unnecessary biopsies and overtreatment. Furthermore, disease monitoring remains challenging, as current prognostic strategies rely on data obtained by invasive means such as biopsy, surgery and digital rectal examination. Additionally, there are no tools to predict tumor progression, risk reclassification and treatment response. As the need for accurate biomarkers continues, miRNAs are promising biomarkers for screening, surveillance, prognosis and treatment response in prostate cancer. In this review, the authors describe the current evidence regarding the accuracy and efficacy of these biomarkers for prostate cancer.


Assuntos
MicroRNAs , Neoplasias da Próstata , Masculino , Humanos , MicroRNAs/genética , Biomarcadores Tumorais/genética , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/genética , Neoplasias da Próstata/terapia , Prognóstico , Próstata/patologia , Antígeno Prostático Específico
8.
J Math Biol ; 65(6-7): 1337-57, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22159642

RESUMO

Let S denote the set of (possibly noncanonical) base pairs {i, j } of an RNA tertiary structure; i.e. {i, j} ∈ S if there is a hydrogen bond between the ith and jth nucleotide. The page number of S, denoted π(S), is the minimum number k such that Scan be decomposed into a disjoint union of k secondary structures. Here, we show that computing the page number is NP-complete; we describe an exact computation of page number, using constraint programming, and determine the page number of a collection of RNA tertiary structures, for which the topological genus is known. We describe an approximation algorithm from which it follows that ω(S) ≤ π(S) ≤ ω(S) ・log n,where the clique number of S, ω(S), denotes the maximum number of base pairs that pairwise cross each other.


Assuntos
Pareamento de Bases , Modelos Químicos , Conformação de Ácido Nucleico , RNA/química , Ligação de Hidrogênio , Modelos Genéticos , Modelos Moleculares , Termodinâmica
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